chapter  6
17 Pages

The Development of Strategies for Solving the Perspective T ask

By(with Joanne Rovet)

Spatial cognition and spatial thinking have been given many descriptions varying from “ the ability to move, turn, twist or rotate an object or objects and to recognize a new appearance or position after the prescribed manipulation has been performed” (Guilford, 1947), to “ the ability to recognize the identity of an object when it is seen from different angles” (Thurstone, 1950), to “ the ability to comprehend imaginary movement of objects in three dimensional space” (French, 1951). Such attempts at defini­ tion and measurement were adequate as long as a theory of spatial cognition was concerned only with problems of individual differences-some people are better than other people on certain tasks-or with problems of development-performance is a function of age and experience-and so on.